Pediatric gastroenterologists generally provide treatment for the following:

Bleeding from the gastrointestinal tract
Lactose intolerance
Food allergies or intolerances
Severe or complicated gastroesophageal reflux disease (reflux or GERD)
Inflammatory bowel disease
Short bowel syndrome
Liver disease
Acute or chronic abdominal pain
Vomiting
Chronic constipation
Chronic or severe diarrhea
Pancreatic insufficiency (including cystic fibrosis) and pancreatitis
Nutritional problems (including malnutrition, failure to thrive, and obesity)
Feeding disorders